| Symbol | Definition |
|---|---|
| g | gyromagnetic ratio for hydrogen 42.58 MHz / Tesla |
| d | chemical shift |
| q | angle of projection |
| Sij | Summation of all pixels in an image |
| BW | bandwidth |
| BWT | bandwidth theoretical |
| CH2 | methylene hydrogen, A chemically characteristic peak in fat |
| CH3 | methyline hydrogen, A chemically characteristic peak in fat |
| CSA | chemical shift artifact |
| EPR | electron paramagnetic resonance |
| FOV | field of view |
| Fs | Maximum quadrature sampling rate |
| FT | Fourier transform |
| G | gradient |
| Hz | hertz unit of frequency cycles/second |
| i | row index for chemical shift components |
| I1 | Original Test Image |
| I2 | theoretical RT |
| I3 | theoretical IRT reconstruction |
| I4 | theoretical reconstruction compared to original =I4= total square difference image |
| I5 | experimental RT |
| I6 | experimental IRT reconstruction |
| I7 | experimental reconstruction compared to original =I7= total square difference image |
| I8 | comparison of difference image I4 to difference image I7 = difference image I8 |
| IRT | inverse Radon transform |
| j | column index for chemical shift components |
| MHz | mega-hertz unit of frequency 106cycles/second |
| MR | magnetic resonance |
| MRI | magnetic resonance imaging |
| MRS | magnetic resonance spectroscopy |
| n | interger numbers from 1 up to 256 |
| N | Scale factor of 65,536 |
| NMR | nuclear magnetic resonance |
| r | spin density |
| pixel | picture element |
| PSA | Projection Slice Algorithm |
| P(y,q,d) | projection of spatial coordinate y with respect to q and d. |
| RT | Radon transform |
| S(TR,TE) | signal with respect to TR and TE |
| S-S | spatial-spectral |
| S-S-S | spatial-spatial-spectral |
| S-SI | spatial-spectral imaging |
| S-S-SI | spatial-spatial-spectral imaging |
| T1 | spin-lattice relaxation time |
| T2 | spin-spin relaxation time |
| TE | echo-time |
| TR | repetition time |
| VBW | variable-bandwidth |
| voxel | volume element |
| x | spatial coordinate x |
| y | spatial coordinate y |